mirror of
https://github.com/yacy/yacy_search_server.git
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b2f4087400
the field contains now a time in UDC-0 (instead relative to local UDC offset) this fixes a bug in peer selection, where an iteration over all seeds ordered by lastseen did not work correctly. Problems may occur because the new meaning of this field may mix with the different meaning of that field in older peers git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3322 6c8d7289-2bf4-0310-a012-ef5d649a1542
196 lines
9.8 KiB
Java
196 lines
9.8 KiB
Java
// hello.java
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// -----------------------
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// part of the AnomicHTTPD caching proxy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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//
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// You must compile this file with
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// javac -classpath .:../../classes hello.java
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// if the shell's current path is HTROOT
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import java.util.Date;
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import de.anomic.http.httpHeader;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.yacy.yacyClient;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacySeed;
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import de.anomic.yacy.yacyVersion;
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public final class hello {
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch ss) throws InterruptedException {
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if (post == null || ss == null || yacyCore.seedDB == null || yacyCore.seedDB.mySeed == null) { return null; }
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// return variable that accumulates replacements
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final serverObjects prop = new serverObjects();
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if (prop == null) { return null; }
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// final String iam = (String) post.get("iam", ""); // complete seed of the requesting peer
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// final String pattern = (String) post.get("pattern", ""); //
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// final String mytime = (String) post.get(MYTIME, ""); //
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final String key = post.get("key", ""); // transmission key for response
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final String seed = post.get("seed", "");
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final String countStr = post.get("count", "0");
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int i;
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int count = 0;
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try {count = (countStr == null) ? 0 : Integer.parseInt(countStr);} catch (NumberFormatException e) {count = 0;}
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// final Date remoteTime = yacyCore.parseUniversalDate((String) post.get(MYTIME)); // read remote time
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final yacySeed remoteSeed = yacySeed.genRemoteSeed(seed, key, false);
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// System.out.println("YACYHELLO: REMOTESEED=" + ((remoteSeed == null) ? "NULL" : remoteSeed.toString()));
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if (remoteSeed == null) { return null; }
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// final String properTest = remoteSeed.isProper();
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// The remote peer might not know its IP yet, so don't abort if the IP check fails
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// if ((properTest != null) && (! properTest.substring(0,1).equals("IP"))) { return null; }
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// we easily know the caller's IP:
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final String clientip = (String) header.get("CLIENTIP", "<unknown>"); // read an artificial header addendum
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final String userAgent = (String) header.get(httpHeader.USER_AGENT, "<unknown>");
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final String reportedip = remoteSeed.get(yacySeed.IP, "");
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final String reportedPeerType = remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_JUNIOR);
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final float clientversion = remoteSeed.getVersion();
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int urls = -1;
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// if the remote client has reported its own IP address and the client supports
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// the port forwarding feature (if client version >= 0.383) then we try to
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// connect to the reported IP address first
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if (reportedip.length() > 0 && !clientip.equals(reportedip) && clientversion >= yacyVersion.YACY_SUPPORTS_PORT_FORWARDING) {
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serverCore.checkInterruption();
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// try first the reportedip, since this may be a connect from a port-forwarding host
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prop.putASIS("yourip", reportedip);
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remoteSeed.put(yacySeed.IP, reportedip);
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urls = yacyClient.queryUrlCount(remoteSeed);
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}
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// if the previous attempt (using the reported ip address) was not successful, try the ip where
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// the request came from
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if (urls < 0) {
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boolean isNotLocal = true;
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// we are only allowed to connect to the client IP address if it's not our own address
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if(serverCore.portForwardingEnabled || serverCore.useStaticIP)
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isNotLocal = serverCore.isNotLocal(clientip);
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if(isNotLocal) {
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serverCore.checkInterruption();
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prop.putASIS("yourip", clientip);
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remoteSeed.put(yacySeed.IP, clientip);
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urls = yacyClient.queryUrlCount(remoteSeed);
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}
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}
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// System.out.println("YACYHELLO: YOUR IP=" + clientip);
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// set lastseen value (we have seen that peer, it contacted us!)
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remoteSeed.setLastSeenUTC();
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// assign status
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if (urls >= 0) {
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if (remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR) == null) {
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prop.putASIS(yacySeed.YOURTYPE, yacySeed.PEERTYPE_SENIOR);
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR);
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} else if (remoteSeed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_PRINCIPAL).equals(yacySeed.PEERTYPE_PRINCIPAL)) {
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prop.putASIS(yacySeed.YOURTYPE, yacySeed.PEERTYPE_PRINCIPAL);
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} else {
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prop.putASIS(yacySeed.YOURTYPE, yacySeed.PEERTYPE_SENIOR);
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR);
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}
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// connect the seed
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yacyCore.peerActions.peerArrival(remoteSeed, true);
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} else {
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prop.putASIS(yacySeed.YOURTYPE, yacySeed.PEERTYPE_JUNIOR);
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yacyCore.peerActions.juniorConnects++; // update statistics
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remoteSeed.put(yacySeed.PEERTYPE, yacySeed.PEERTYPE_JUNIOR);
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yacyCore.log.logInfo("hello: responded remote junior peer '" + remoteSeed.getName() + "' from " + reportedip);
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// no connection here, instead store junior in connection cache
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if ((remoteSeed.hash != null) && (remoteSeed.isProper() == null)) {
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yacyCore.peerActions.peerPing(remoteSeed);
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}
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}
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yacyCore.peerActions.setUserAgent(clientip, userAgent);
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if (!((String)prop.get(yacySeed.YOURTYPE)).equals(reportedPeerType)) {
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yacyCore.log.logInfo("hello: changing remote peer '" + remoteSeed.getName() +
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"' [" + reportedip +
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"] peerType from '" + reportedPeerType +
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"' to '" + prop.get(yacySeed.YOURTYPE) + "'.");
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}
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serverCore.checkInterruption();
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final StringBuffer seeds = new StringBuffer(768);
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// attach some more seeds, as requested
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if ((yacyCore.seedDB != null) && (yacyCore.seedDB.sizeConnected() > 0)) {
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if (count > yacyCore.seedDB.sizeConnected()) { count = yacyCore.seedDB.sizeConnected(); }
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if (count > 100) { count = 100; }
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// latest seeds
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final yacySeed[] ySeeds = yacyCore.seedDB.seedsByAge(true, count);
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// attach also my own seed
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seeds.append("seed0=").append(yacyCore.seedDB.mySeed.genSeedStr(key)).append(serverCore.crlfString);
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count = 1;
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// attach other seeds
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if (ySeeds != null) {
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seeds.ensureCapacity((ySeeds.length + 1) * 768);
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for (i = 0; i < ySeeds.length; i++) {
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if ((ySeeds[i] != null) && (ySeeds[i].isProper() == null)) {
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seeds.append("seed").append(count).append('=').append(ySeeds[i].genSeedStr(key)).append(serverCore.crlfString);
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count++;
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}
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}
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}
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} else {
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// attach also my own seed
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seeds.append("seed0=").append(yacyCore.seedDB.mySeed.genSeedStr(key)).append(serverCore.crlfString);
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}
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prop.putASIS("mytime", yacyCore.universalDateShortString(new Date()));
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prop.putASIS("seedlist", seeds.toString());
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// return rewrite properties
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return prop;
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}
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}
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